Growth of single- crystal photorefractive fibers of 'BI IND.12''SI''O IND.20' and 'BI IND.12''TI''O IND.20' by the laser-heated pedestal growth method - Prokofiev, V V; Andreeta, José Pedro; Lima, C J; Andreeta, M R B; Hernandes, Antônio Carlos; Carvalho, J F; Kamshilin, A A; Jaaskelainen, T (Journal of Crystal Growth, 1994)